Lamp.



No. 7|l,299. Patented Oct. l4, I902 R. M. DIXON.

LAMP.

(Application filed July 29, 1901.)

(No Modei.)

Witnesses: 1170047 604":

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UNITED STATES PATENT OFFICE.

ROBERT M. DIXON, OF EAST ORANGE, NEW JERSEY.

LAMP.

SPECIFICATION forming part of Letters Patent No. 71 1,299, dated October 14,1902.

Application filed July 29,1901. Serial No. 70,031. (No model.)

To all whom it may concern..-

Be it known that 1, ROBERT M. DIXON, a citizen of the United States, residing at East Orange, Essex county, New Jersey, have invented certain new and useful Improvements in Lamps, of which the following is a specification.

My invention relates to lamps, and has particular reference to that class of lamps known as car-lamps, although it will be understood that my invention is not limited thereto.

In the accompanying drawing I have shown I a lamp embodying my invention, and in order that the invention may be fully illustrated I have shown the said lamp as a deck-car lamp, in which the flame is directed downwardly and outwardly and the products of combustion are conducted out of the car by a suitable flue or draft-tube. The globe portion of the lamp is substantially closed and receives its main supply of air from the top, the gas being delivered downwardly and the flame being suitably spread.

The figure of drawing shows a transverse vertical section through the lamp and its supporting-deck.

In the drawing, 1 indicates a suitable casting, shown in the present instance as suspended from the deck 2 of the car by suitable suspension-arms 3. One of the arms is hollow and conducts the gas to a duct 4, suspended by the casting, through which the gas passes to a chamber 5, supporting suitable burnertubes 6, whose lower ends are spaced apart by rings 7, having apertures 8 therein and extending upward to form a ductor casing 9, which is preferably surrounded by a suitable reflector 10, which is supported thereby.

A center casting 11 is provided with ducts 12 for the passage of air downward to the flame, and fines or passages 13 for the passage upward of the products of combustion. The centercasting and its passages and the burner are surrounded by a suspended chimney or mantle 14, in the form of a casing, which forms the outer wall of the flues or passages 13 and aids in conducting the products of combustion upward.

The fines 13 deliver their products of combustion to an elongated draft-tube,'which by reason of its length and the heat of the aircolumn will produce a powerful upward draft 19, which serves to deflect currents of air from the space between the top of the draft-tube and the cap or deflector plate 16. The ventilator 19 is supported by the deck on the outside of the car and is provided with a casing 20, which conducts the products of combustion and the air from the cars upward through the deck to the ,ventilator, whence they are discharged to the open air.

A combined bezel and support-ring 21 is suspended from the center casting by arms 22, which inclose a dome 23, which is supported by a ring 21. The ring 21 also supports a suitable globe 24. Below the Argand burner is a suitable button or spreader 25, herein shown as adjustable on the rod 26 by the nut 27. i

A suitable shield or ornamental crown-piece 28 is provided to cover the junction between the flue 15 and the rest of the lamp.

The globe and dome are transparent or translucent and constitute a substantially closed chamber. The air-supply passes through or around the crown-piece 28 and passes downward through the ducts 12 and thence through the casing 9 through the apertures 8 to the flame, the flame being spread by the spreader 25.

The products of combustion pass upward within the chimney 14 and then through the ducts or chimneys 13, whence they are delivered to the draft tube 15 and pass therethrough upward and out of the lamp. A violent suction is thereby produced and a very brilliant and steady light produced.

Having described my invention, what I claim, and desire to secure by Letters Patent, 1s-

1. In a lamp the combination of a burner of the inverted Argand type, a center casting provided with passages for directing the downward flow of air, and with passages for directing the upward flow of products of combustion; a casing 9 surrounding the said burner and adapted to conduct air to the top deliver products of combustion to aventilator or other outlet to the deck, a deflector 15 17 having an inturned edge, and a deflectorplate 16 located above the said edge.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, this 29th day of 20 June, 1901.

R. M. DIXON.

Witnesses:

GEO. E. MORSE, O. A. MoOUNE. 

